{1},
{1, 1},
{1, 6, 1},
{1, 10, 10, 1},
{1, 15, 20, 15, 1},
{1, 21, 35, 35, 21, 1},
{1, 28, 56, 70, 56, 28, 1},
{1, 36, 84, 126, 126, 84, 36, 1},
{1, 45, 120, 210, 252, 210, 120, 45, 1},
{1, 55, 165, 330, 462, 462, 330, 165, 55, 1},
{1, 66, 220, 495, 792, 924, 792, 495, 220, 66, 1}